Investigate swapping json backends

### What feature should we add?

The `FriendlyJsonSerde` and anywhere else we use `json` could likely benefit from using configurable json libraries such as `orjson` or `ujson`. I think these could potentially be available as install extras and configurable on the serde class.

This sounds good in theory but this issue requires a bit of digging for friction / pain points to see how feasible this is.